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Business Segments, Segment Reporting Information (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013
Information by business segment [Abstract] |  |  |  |  |
Revenues from third parties | $ 12,874.4 |  | $ 11,377.2 |  |
Revenues from related parties | 35.5 |  | 5.9 |  |
Intersegment and intrasegment revenues | 0 |  | 0 |  |
Total revenues | 12,909.9 |  | 11,383.1 |  |
Equity in income (loss) of unconsolidated affiliates | 56.5 |  | 44.5 |  |
Gross operating margin | 1,329.8 |  | 1,231.1 |  |
Property, plant and equipment, net (see Note 6) | 27,262.5 |  |  | 26,946.6 |
Investments in unconsolidated affiliates (see Note 7) | 2,706.4 |  |  | 2,437.1 |
Intangible assets, net (see Note 8) | 1,434.4 |  |  | 1,462.2 |
Goodwill (see Note 8) | 2,079.9 | [1] |  | 2,080.0 | [1]
Segment assets | 33,483.2 |  |  | 32,925.9 |
NGL Pipelines and Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Revenues from third parties | 5,173.7 |  | 3,950.7 |  |
Revenues from related parties | 5.8 |  | 0.3 |  |
Intersegment and intrasegment revenues | 3,861.0 |  | 2,709.0 |  |
Total revenues | 9,040.5 |  | 6,660.0 |  |
Equity in income (loss) of unconsolidated affiliates | 1.4 |  | 3.9 |  |
Gross operating margin | 780.0 |  | 592.5 |  |
Property, plant and equipment, net (see Note 6) | 11,689.7 |  |  | 9,957.8 |
Investments in unconsolidated affiliates (see Note 7) | 673.1 |  |  | 645.5 |
Intangible assets, net (see Note 8) | 276.6 |  |  | 285.2 |
Goodwill (see Note 8) | 861.2 |  |  | 341.2 |
Segment assets | 13,500.6 |  |  | 11,229.7 |
Onshore Natural Gas Pipelines and Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Revenues from third parties | 1,200.0 |  | 874.2 |  |
Revenues from related parties | 4.6 |  | 3.5 |  |
Intersegment and intrasegment revenues | 309.4 |  | 256.2 |  |
Total revenues | 1,514.0 |  | 1,133.9 |  |
Equity in income (loss) of unconsolidated affiliates | 0.9 |  | 1.0 |  |
Gross operating margin | 220.4 |  | 190.8 |  |
Property, plant and equipment, net (see Note 6) | 8,871.8 |  |  | 8,917.3 |
Investments in unconsolidated affiliates (see Note 7) | 23.7 |  |  | 24.2 |
Intangible assets, net (see Note 8) | 1,006.2 |  |  | 1,017.8 |
Goodwill (see Note 8) | 296.3 |  |  | 296.3 |
Segment assets | 10,198.0 |  |  | 10,255.6 |
Onshore Crude Oil Pipelines and Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Revenues from third parties | 4,935.4 |  | 4,793.2 |  |
Revenues from related parties | 22.9 |  | 0 |  |
Intersegment and intrasegment revenues | 2,550.7 |  | 2,024.7 |  |
Total revenues | 7,509.0 |  | 6,817.9 |  |
Equity in income (loss) of unconsolidated affiliates | 42.7 |  | 36.6 |  |
Gross operating margin | 159.7 |  | 236.4 |  |
Property, plant and equipment, net (see Note 6) | 1,473.4 |  |  | 1,479.9 |
Investments in unconsolidated affiliates (see Note 7) | 1,403.2 |  |  | 1,165.2 |
Intangible assets, net (see Note 8) | 4.2 |  |  | 4.5 |
Goodwill (see Note 8) | 305.1 |  |  | 305.1 |
Segment assets | 3,185.9 |  |  | 2,954.7 |
Offshore Pipelines And Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Revenues from third parties | 34.7 |  | 40.5 |  |
Revenues from related parties | 2.2 |  | 2.1 |  |
Intersegment and intrasegment revenues | 2.3 |  | 2.0 |  |
Total revenues | 39.2 |  | 44.6 |  |
Equity in income (loss) of unconsolidated affiliates | 11.1 |  | 6.4 |  |
Gross operating margin | 39.3 |  | 40.5 |  |
Property, plant and equipment, net (see Note 6) | 1,202.3 |  |  | 1,223.7 |
Investments in unconsolidated affiliates (see Note 7) | 528.4 |  |  | 531.8 |
Intangible assets, net (see Note 8) | 49.0 |  |  | 54.7 |
Goodwill (see Note 8) | 82.0 |  |  | 82.1 |
Segment assets | 1,861.7 |  |  | 1,892.3 |
Petrochemical and Refined Products Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Revenues from third parties | 1,530.6 |  | 1,718.6 |  |
Revenues from related parties | 0 |  | 0 |  |
Intersegment and intrasegment revenues | 437.0 |  | 422.1 |  |
Total revenues | 1,967.6 |  | 2,140.7 |  |
Equity in income (loss) of unconsolidated affiliates | 0.4 |  | (3.4) |  |
Gross operating margin | 130.4 |  | 170.9 |  |
Property, plant and equipment, net (see Note 6) | 2,606.2 |  |  | 2,712.4 |
Investments in unconsolidated affiliates (see Note 7) | 78.0 |  |  | 70.4 |
Intangible assets, net (see Note 8) | 98.4 |  |  | 100.0 |
Goodwill (see Note 8) | 535.3 |  |  | 1,055.3 |
Segment assets | 3,317.9 |  |  | 3,938.1 |
Adjustments and Eliminations [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Revenues from third parties | 0 |  | 0 |  |
Revenues from related parties | 0 |  | 0 |  |
Intersegment and intrasegment revenues | (7,160.4) |  | (5,414.0) |  |
Total revenues | (7,160.4) |  | (5,414.0) |  |
Equity in income (loss) of unconsolidated affiliates | 0 |  | 0 |  |
Gross operating margin | 0 |  | 0 |  |
Property, plant and equipment, net (see Note 6) | 1,419.1 |  |  | 2,655.5 |
Investments in unconsolidated affiliates (see Note 7) | 0 |  |  | 0 |
Intangible assets, net (see Note 8) | 0 |  |  | 0 |
Goodwill (see Note 8) | 0 |  |  | 0 |
Segment assets | $ 1,419.1 |  |  | $ 2,655.5 |
[1] | The total carrying amount of goodwill at March 31, 2014 and December 31, 2013 is net of $1.3 million of accumulated impairment charges. No goodwill impairment charges were recorded during the three months ended March 31, 2014.

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